Loading-machine.



N. D. LEV IN.

LOADING MACHINE- APPLICATION FILED' JAN. 13. 1912. RENEWED OCT. 1. P911.

Patented Nov. 13, 1917.

5 SHEETS-SHEET l- N. D. LEVIN.

LOADING MACHINE.

APPLICATION FILED ]AN. 13.1912. RENEWED OCT. 1.1911.

Patented Nov. 13, 1917.

5 SHEETS-SHEET 2.

N. D. LEVIN LOADING MACHINE.

APPLICATIUN FILED 1M. 13.1912. RENEWED'OCT. I, 1911.

Patented Nov. 13, 1917.

5 SHEETS-$HEET 3.

ounce-once ooneo 0000 Pigented Nov. 13, .1917. Q s SHEETS-SHEET 4 gk &

N. D. LEVIN.

LOADING MACHINE. APPLICATION FILED JAN. 13; I912- RENEWED OCT. 1917-1,246,762.

w v 1 1 h mm I N. D. EEVIN.

LOADING MAQHINE.

APPLICATION FILED 1AN.I3.I9I2. RENEWED OCT. 1.1911.

Patented Nov. 13, 191'} 5 SHEETS-SHEET 5- BEST AVAILABLE COP UNITEDsrarns PATENT. ()FFICE.

NILS n. LEVIN, or oo UM'BUs, onro, ASSIGNOR are THE JEFFREYiamwrncr'unme COMPANY, A. conrona'rron or 0310.

LOADING-MACHINE.

Specification of Letters Patent.

Patented Nov. 13, 191?.

Application filed-January 13, 1912, Serial No. 671,037. Renewed October1, 1917. Serial No. 194,285.

l0 -The invention relates to mechanism designed for the loading of loosematerials.

4 'The. objects of the invention comprise the provision in a machinehaving relatively fixed and movable frame parts of an im- .5 provedconstruction and arrangement of power mechanism for operating themachine. Afurther object is the proved construction an mounting of theconveyer part of the machine to a cilitate '0 the delivery of thematerial into cars.

I have sought furthermore to design a loadin machine adapted for use inmines to loa the coal broken down at the face into cars b which it istransported from {-the'mine.-. 11 coal mines the head room is fusuallyquite limited and there are relatively narrow entries with sharp bendsthrough which any machine that is to be used must be transported.Various features of my im- 0 proved machine are incident to these workmgconditions as will readily be understood from the description whichfollows.

The invention consists of the construction,

arran ement and combination of parts set 5 forth in the followindescription andclaims inconnection with t e accompanying drawings whichshow the preferred form of'the invention.

Ofthe drawings,

0 Figure 1 is a side elevation of the machine in operative position. p y0 Fig. 2 is a somewhatdiagrammatic detail view showing the manner ofusing a rope in connection with certain of the machine parts to move.the machine from its inop erative position, in which it is adapted tobe transported from place to place, as shown in Fig. 3, to its operativeposition, as shown in Fig. 1.

Fig. 3 is a side elevation showing the machine in inoperative position,that is, in position for transportation.

Fig. 4 is a somewhat diagrammatic detail provision of an imviewshowingthe manner of'using a rope to move the machine from the operativeposition, shown in Fig. 1, to the inoperatlve position shown in Fig. 3.

F1g. 5 is a plan view ofthe machine.

' Fig. 6 is-a plan view of the truck which.

supports the conveyor part of the machine.

Fig. 7 is a detail plan view of the bracket or arm upon'which theconveyer frame is swiveled.

Fig. 8 is an enlarged fragmentary detail view showing some of thedriving mechanism of the loader, some of the parts shown being invertical section taken in thecentral Ylo'ngitudinal plane of themachine, while other parts are shown in elevation.

Fig. 9 is an enlarged front elevation of some of the parts shown in Fig.8.

Fig. 10 is an enlarged detail view of the driving pawl which actuatesthe drum and cable mechanism.

Fig. 11- is an enlarged plan view of the drum winding mechamsmwhich isarranged beneath the pan or frame of the conveyer.

Fig. 12 is an enlarged upright sectional view of the supporting bars andplates carried on the under side of the conveyor frame,

the section being taken on the line 21-21 of Fig. 13.

Fig. 13 is an enlarged longitudinal section taken on the line 22-22ofFig. 12.

Referring indetail to the construction illustrated, 1 designates themain frame or body part and 2, 2 the wheels of a truck designed to runupon track rails and, to afi'ord suitable support for the working partsof the-"loader. This truck has a rear-' ward extension comprising sidebars 3-, 3, a front cross-bar 4 and a rear cross bar 5, This'extensionis swiveled upon the rear axle of the truck and carries forwardprojecting arms 3, 3 which extend beneath the body 1 o'fthe truck andserve to limit the relative movement of said body and of the extension Iabout the axis of the rear axle of the truck.

Upon the outer ends of the cross bar 5 of the truck are mounted flangedtrack wheels 6, 6. The cross bar 4 of the truck extension carries apivoted dog 7 which is adapted to be enga ed with a plate 8 carried byan upright lock 9 onthe frame 1 of the truck.

When the truck extension is raised and the dog 7 is swung over to engagethe plate-8} BE T AVAILABLE COP the extension isheld in elevatedposition, as shown in Fig. 3; but the locking dog 7 can be lifted toallow the truck extension to fall and its flanged wheels 6 to rest uponthe track rails, as shown in Fig. 1.

The side barsl 3, 3, of the truck extension have upward" extending arms3", 3 which support an arm or bracket, which is designatedas an entiretyby 10. This arm or bracket 10 consists of two upright bars 11, 11, eachof which is pivotally supported at its lower end on one of the arms 3",and a triangularframe 12 which is slotted at its front side to receivethe upper ends of the bars 11 and which'is pivotally connected to saidbars.

The truck extension bars 3 or 3 are provided with a series of holes 13'and the bracket bars 11 can have their lower ends pivoted in either ofsaid series of holes except the upper one which is designed to receive apin 14 to hold the bars 11 in upright position, as shown in Fig;- Thetriangular bracket part 12 is formed at either side with depending lugs12* and each of the arms 11 carriesan adjustable contact screw 15'adapted to engage the adjacent lug 12,

these lugs and screws bein designed to form an adjustable stop to, llmitthe '"relative movement in one direction pf the bracket parts 11 and 12.p

The rear end of the bracketlO forms apivotal bearing support for therear end of a conveyer which comprises an elongated frame designated asan entirety by 16. This {frame consists of a pan part 17 which hassfiaring side walls and which is divided into I two parallel troughs bythe two parallel longitudinally extending chain guides, each 0 of whichconsists essentially an upper angle bar and a lower an le bar 19. Thepan parts '17 and the angle ars,18 and 19 are rigidly vconnected byvarious transverse structural bars, plates and castings, such as thebars 20, plates 21 and 22 and castings 23 and 24:, the casting 23 beingat the lower end of the inclined part of the conveyer frame while thecasting 24 is at discharge end.

The forward gathering end" of the conveyer comprises a section which ispivotally connected with the main part of the conveyer frame. This frontsection of the frame has a casting 25 which is pivotally connected tothe frame casting 23 and carries a shoe 25 adapted to rest upon andslide its rear or over the ground. At the front end of the section-thereis a two-part casting 27, 27, and these castings 25 and.27, 27 areconnected bythe chain guide angle bars 18 and 19, the whole forming arigid frame structure adapted to rest upon and follow the surface of theground. This front frame section while pivotally connected to the mainsection is limited in its'movement relative to the latter by a rearwardextension of the casting 25 which is adapted to engage the casting 28 onthe main section.

The lower edge of the angle bars 18-is the motor to be hereinafterdescribed. The

shaft of this drive sprocket has its lower end mounted in a socket thelower end of which is rounded and fits loosely in the socket 12 at theinner end of the triangular frame 12, This provides a loose pivotalconnection for the forward end of the conveyer which permits it to rockvertically, as well as be moved laterally.

At the front or oiiter end of theconveyer the chain passes around anidler sheave or sprocket wheel carried by the casting 27, 27., which aresecured together by olts, or other suitable means. These casting-partsare preferably shaped to form a semicircular continuation of the chainguide formed bythe angle bars 18 and 19. Inthis way the flights of theconveyer are firmly supported as they pass around the front end or nose.This firm support is necessary because the material is taken on theflights as they move around the forward extension of the conveyer frameand it is essential'that the flight be held firmly to the work in orderthat they may be forced under the material to be loaded.

It will be noted on referring to Fig. 5 that the pan part of theconveyer frame is-cut away at the front end of the machine so as toexpose the flights as they move around the front pivoted extension andenable them to advantageously attack the mass of material which is to betaken on and conveyed to the point of discharge. The pan structure iscut away similarly on both sides so that the conveyer can be swung onits rear pivotal support either to the right or to the left to advancethe flights agalnst the material, it being understood that the conveyerchain is driven in one direction when the machine is swung to the leftand in the opposite direction when the machine is swung to the right.

At the rear or discharge end of the conveyer also the pan part of theframe is cut away so that the flights are freely exposed on all sides asthey pass around the rear side of the driving sprocket wheel. As theflights move around the sprocket wheel they are separated from eachother so that much of the material carried upon the flights will artsBEST AVAILABLE COP fall of its own accord from the conveyer. Buttoinsure the discharge of all the material an adjustable knock-offdevice is provided. This is preferably in the form of a metal brush 39mounted on the end of a swinging arm 40 and disposed so as to liedirectly over the flights as they pass around the driving sprocket wheeland scrape from the flights any material that does not fall. of its ownaccord. The arm 40 is pivotally mounted on a pin 41 carried by shaft 32and a plate 42. The brush 39 carries a depend- .ing arm 39 arranged toswing between and engage the inner edges of aprons 48, 43 which aresecured to the conveyer frameas shownin Fig. and iserve tokeep thedischargeof material within suitable bounds. The conveyer flights tendto drag the knockofl brush with them in their movement sov that thebrush is heldwith its stop arm 39" against one or the other 'oftheaprons 43 according to the direction of movement of the flights; andwhen the movement of the flights is reversed the brush is automaticallyswung from one side to the other and is therefore always in suitableposition to effect the discharge of material from the conveyer.

When the machine is in operative position, as shown inFig. 1, theconveyer frame is supported from the truck at one point only, namely, atthe rear end of the arm or bracket 10,the' front end-of the conveyerframe resting upon the ground. But when the machine is being moved fromplace to place it is necessary that the conveyer frame e carriedentirely by the truck, as shown in' Fig. 3. The truckis'thereforeprovided with'a bail 44 pivoted above the rear a'xle ofthe truck andhaving a transverse part 44 at its free or swinging vend disposed abovethe front axle of the truck. 45, 45 are notched segmental arms swiveledupon the front axle of the truck and adapted to receive lateralextensions of the crossbar 44 so as to support said bar at differentelevations. i

When the truck is in operative position 'she segments 45 are swungdownward, .as shown in Fig. 1, and when the machine is to ac transportedfrom one place to another shese segments can be swung upward into OII16such position as that shown in .Fig. 3, where the bail is shown in araised os1- aion such that the cross bar. 44" furnishes m elongatedsupport for -the front part of ;he conveyer frame, the said frame beingrovided on its under side with'-longitudi-' ially extending bars46 and47, thelatter 1f which is arranged to rest upon the cross )ar 44 of thetruck bail. When the forvard part of the conveyer is thus supported herear end is supported not on the rear and of the armbut-on thetransverse-bar .2 of the arm section 12, the conveyer frame having atransverse bar or plate arranged to rest upon the said'cross bar 12.

Thus when the machine has been moved into the position shown in Fig. 3the weight of the rear part of the conveyer is transmitted through thebracket arms 11 to the truck.

drive the conveyer chain and to feed the machine is mounted entirelyupon the swing ing conveyer frame. 49 is a motor, preferably an electricmotor, though a compressed air orother engine may be employed. The motoris suitably supported'from the frame of the conveyer with the axis-ofits armature shaft extending longitudinall of the conveyer-frame.- Atits front end t e armature shaft carries a pinion 50? which drives agear 51 and this gear is connected by means of a friction clutch 52 witha longitudinally extending shaft 53. shaft carries a pinion 54 thatdrives a gear 55" which is fast on a shaft 56. The shafts 53 and 56 aresuitably supported in bearings carried by the conveyer frame, asshown'in Fig. 8. 57 is a shaft disposed in'axial alin'ement with theshaft 56. The front end of the shaft 57 is keyed to a sleeve 58 whichhas a ball and socket'bearing support 59. The back or inner end of shaft57 is connected, by gear and pinion means, or other suitable means, tothe drive sprocket so as to cause rotation of the same. .Thesleeve 58 isformed with clutch teeth or extensions 58* and a sliding clutch 62 iskeyed upon the adjacent end ofithe shaft 56 and can be moved into andout of engagement with the clutch teeth 58 by means of a suitablehandlever 63. When the clutch is thrown into engagement the power of'themotor is transei mitted through the several gears and shafts describedto the driving sprocket wheel 30 at the rear end of the conveyer, theower transmitted being determined by the friction clutch 52 which can beadjusted to limit the powertransmitted.

The following devices are provided to swing the conveyer toward theright or left At its rear end this to feed the flights to the materialto be loaded. 64 and 65are winding drums loosely mounted on a transverseshaft 66 carried in suitable bearings on the under. side of the conveyerframe. -These drums are formed on their inner Sides with clutchiteeth 64s ifting the clutches 67 and 68and tlrese 1 5e BEST AVAILABLE COP leversare connected to a transverse shifting bar 71 so that the clutches canbe simultaneously operated to'engage one and disengage the other. Theshifting bar 71 is formed witha locking lug 71 arranged to cooperatewith a notched plate 72 carried by the conveyer frame, the bar 71 beingpressed into engagement with said plate .by'spring 73, 73 on the levers69 and 70. The arrangement is such that the clutches can be set ineither of three positions, that 1s, with both through'the followingconnections. 79 is an eccentric disk sleeved upon the shaft 56 andarranged to be driven therefrom through a friction clutch 80 which canbeadjusted to transmit more or lesspower as may be desired. part 81 toengage the eccentric 79 and is connected at its lower end to a crosshead 82 which is supported by guides-88 on the conveyer frame. Thiscross head is connected by means of link bars 84, 84 with the swingingarms 76, 77 which carry the driving pawl 75 (so that the reciprocationof the cross .head "82'reS11lting from the rotation of the shaft 5 56causes the oscillation of the pawl 75 and 8 '-.,a consequentintermittent movement of the ratchet wheel.

To vary the speed of rotation of the ratchet wheel, and consequently ofthe winding drums 64 and 65, independently of the speed of rotation ofthe motor, I provide in connection with the ratchet wheel a segmentalguard plate 85 which overlies the teeth of the ratchet wheel for theportion of its circumferen e adjacent the range of movement of the.driving pawl, and which is carried on an arm 86 swiveled on the shaft56. The arm 86 carries a segmental gear 87 I which meshes with a gear 88on a transverse shaft 89. This shaft is provided at each end with ahandle 90, so that the shaft 89 can be turned to set the guardplate 85in different positions such that the driving pawl 75 will ride idly uponthe guard plate during more or less of its oscillatory movement. Theratchet wheel 74 is held against retrograde movement by a spring-pressedpawl 91. Mounted upon the drums 64 and 65 are cables 92 and 93. Thesecables pass forward .and around guide sheaves 9e and 95 on the underside of the conveyer frame from which they can be extended the one 81-is a pitman having a strapv toward the left and the other toward theright and made fast to ,an anchor, jack or the like. When one of thecables is thus arranged and connected it is clear that the roation ofits winding drum will cause the swinging of the conveyer frame towardthe anchor or jack to which the cableis secured. To facilitate thehandling of the machine when-it is being changed from the operativeposition shown in Fig. 1 to the position shown in Fig. 3, or vice versa,I mount on each end of the transverse shaft 66 a nigger head 96 andthese nigger heads extend from either side of the conveyer frame so thata rope can readily be iven several turns around them. In substantialalinement with these nigger heads are idler sheaves 97, 97 mounted on atransverse bar 98 on the front end of the supporting truck and also twopairs of idler sheaves 99 mounted upon the lateralextensions of the arm12 which supports the conveyer frame.

When the machine is to be changed from the inoperative position shown inFig. 3 to I a the operative position shown in-Fig. 1,-a

rope 100 can have one end secured as by a hook 101 to the transverse bar98 of the truck and can then be passed rearward around the inner idler99, thence forward and around the idler 97, thence rearward and aroundthe outer idler 99, thence forward and one or more times around thenigger head 96.

This arrangement of the rope is indicated in dotted lines in Fig. 1, andis shown somewhat diagrammatically in Fig. 2. The machine runner bypulling upon the free end of the rope 100 can cause the rotation of thenigger head 96 to draw the idlers 99 toward the idler 97 which resultsin swinging the upright arms 11, 11 of the supporting bracketlO fromtheir inclined position shown in Fig. 3 to the position shown in Fig. 1.During this movement the conveyer frame is moved forward off thetransverse supporting bar 44; allowing the front end of the conveyer tobe lowered to the ground while the rear delivery end is lifted from the,po-

sition shown in Fig. 3 to that shown in" 1%: is desirable beforeeffecting this change in the position of the machine to lower the truckextension so that its wheels 6 rest upon the track rails, as this can bedone more readily when the machine is-in the position shown in Fig. 3than after it has been moved to the position shown in Fig. 1.Ordinarily, too, during this operation the clutch 62 will be disengagedso that the conveyer flights will not .be driven. When the parts havebeen moved to the positions shown in Fig. 1 it will be seen that therear end of the conveyer is supported by the bracket 10, which in turnis carried by the truck extension. Thus the weight of the rear part ofthe conveyer is transmitted to the track rails through. the two rearwheels of thetruck land the wheels 6, 6 of the truck extension.

When the machine is to be changed from its operative position, as shownin Fig. l, to a position shown in Fig. 3 for transportation, the rope100 can be hooked to an extension 102 on the uprights 3 of the truckextension, and the rope given a suitable number of turns around theadjacent nigger head 96, as shown in Fig. 4. Then when the operatorpulls upon the rope the rotation of the nigger head causes the rope todraw the "upper end of the arm 3 of the truck extension toward thenigger head. And this results in swinging the truck extension upward offthe track so that the hook 7 can be thrown over into locking engagementwith the bar 8, and simultaneously forces the conveyer frame rearwardrelative to the truck, the upright arms 11, 11 swinging rearward tolower the rear endof the conve'yer while the front end of the conveyerrides upright on the front truck support 4A. Obviously in changing themachine from the operative to the inoperative position, or vice versa,the object will be accomplished most readily by havingtwo ropes, one oneither side of the machine, so that the lifting force will be applied toboth sides of the machine simultaneously.

To enable the machine to be coupled to a locomotive an elongatedcoupling bar 103 can be, connected to the front end of the.

truck, as shown in Figs. 3 and 6.

The manner of handling and operating the machine Will be readilyunderstood from the foregoin description. Inasmuch as the operation 0the machine when used for loading coal in mines will be essentially thesame as when loading other materials, a description ofthe machine whenused in a mine will suffice.

Assuming, for example, that the mine is one worked on the room andpillar plan, the'machine,arranged as shown in Fig. 3, will be drawn onthe. mine truck through the entries into a room where the face of thecoal has been undercut and the coal broken down. Mine entries are oftennarrow and the track curves in passing from main entry to branch entryandfrom entry into a room i proved loader, while 0 sharp, but-myimconsiderable length is able to pass through these entries and aroundrelatively sharp curves becausethe elongated conveyer frame is free toswing entrance are necessarily laterally upon the two supports 12 and 44and about the axis of the pivotal connection at the rear or dischargeend of' the conveyen If the mine room narrow the entering track can bearrangedjn the middle of the room so that whenthe machine, has beenmoved up to the mass of broken coalit can be swung both to the right andto the left and so cover a relatively wide range. With the machinestanding in the, room in the position shown in Fig. 3 the machinerunnersfirst lower the truck extension to the track, then apply theropes 100, as indicated in Fig. 4, to move the machine, in the man-- thewinding drum 64 causing the latter to wind up the cable 92 and draw thefront end in Fig. 1, is then run into the position of the conveyer tothe left, the said conveyer being free to swing upon the pivotal supportat its rear end. During this movement the winding drum 65 is free toturn on the shaft 68 so that the cable 93 willbe paid out as-the machineswings.

As the conveyer flights move forward and around the front section ornose of the conveyer they are forced edgewise under the coal and drag italong upon themselves into and up the inclined trough of the conveyerframe to the rear endthereof where it falls.

or is knocked from the flights as they swing around the drivingsprocket. Inasmuch as the frictional drag of the flights on the groundis greateras they move along the v left or advance side of the frontsection or nose of the machine than as they move along the right or rearside of the machine, the flights in the former case being loaded withthe coal while in the latter case they are not, there is a constanttendency to draw the machine endwise toward the coal and it is thus heldautomatically up to the work.

When the machine has swung as far as possible, or as far as desired,toward the left, the motor is reversed so as to reverse the direction oftravel of the conveyer flights and the clutch 67 is disengaged and theclutch 68.engaged to cause the right cable 93 to be wound upon the drum65 and the machine to be swung toward the right. Thus the machine can beswung alternately to the left and to the right until the coal has"flights through the friction clutch 52 which can be operatedindependently of the travcan be adjusted to give way under anydesiredload so that the conveyer parts are protected from breakage.Furthermore, the power which is transmitted from the motor to theWinding drums to cause the advance movement or feeding of the machine istransmitted through an independent friction clutch 80 which can beadjusted to give way to any desired load which may be, and

preferably will be, relatively less than that at which the clutch 52 isset to give way. Thus, if the load encounters abnormal re sistance, theforward feed of the machine will first stop, due to the slippage of theclutch 80, while the conveyer will continue to run, thus tending toclear away the abnormal obstruction to the advance of the machine. Atany time the rate of feed of the machine can be varied by adjusting thehandle 90 to vary the effective throw of the driving pawl 75.

By throwing the clutch 62 out of engagement it is obvious that thewinding drums eling conveyer for the purpose of swinging the machine ormoving it bodily under its own power.

When all of the broken coal in the room has been loaded and it isdesired to move the machine to some other part of the mine the machinerunners apply the ropes 100 in the manner shown in Fig. 4 and restorethe machine to the inoperative position shown in Fig. 3, in the mannerpreviously described.

The machine can then be run over the mine tracks to any desired placefor further use.

It will be understood that when the machine is employed in a mine wherethe vein is thin so that the head room is very restricted, the arms 11,11 will be pivotally connected to the truck extension at the lowermostset of pivot holes 13, as shown in Figs. 1 and 3. On the other hand, ifthere is ample head room the lower ends of the bars 11 can be connectedto the truck extension in the middle set of holes 13. This latterarrangement, of course, gives the loader a higher point of delivery andpermits the use of higher cars. A further adjustment of the arm 10 isafforded by the screws 15 which can be used in conjunction with mainadjustment given by the series of holes 13 to secure the desiredinclination of mine floor regardless of the raising and lowthe arm 10.Thus when the bars 11 are adjusted to their higher position it willordinarily be found "desirable to turn the screws 15 to lift thetriangular part 12 of the arm 10 to a greater inclination to thehorizontal in order to better conform with the general lines ofinclination of the conveyer frame. This vertical adjustment of the rearend of the conveyer does not interfere with the proper working of theflights at the front end of the conveyer because the front end of theconveyer frame is pivotally connected to the main part and is,therefore, free to follow the surface of the ground or ering of the rearend of the conveyer within the limits of the adjustment provided.

While the operative parts of the mechanism are shown as combined with orsupported upon a wheeled truck, and, too, a truck which is fitted totrack rails, it will be seen that as concerns a number of mattersincident to the mechanism there can be modification in this respect; forthat part which I refer to as the truck is essentially a supportingstructure having parts adapted to carry and hold the conveyer mechanismunder one relationship of parts when it is moving to and is sustained inthe working position, and in another relationship of .parts when it ismoving to and supported moving toward or from the position of normaloperation the centers of gravity of the differing parts, aswell as themain center, can be so shifted that it will assist in giving firmsupport to the adjustable part of the mechanism, which, it will beunderstood, is exceedingly heavy. By throwing it longitudinally rearwardwhen bringing it into position for transportation, the center of gravitycan be brought over the vehicle or truck so that it will rest thereonwith steadiness.

I am aware of the fact that portable ele- 'vators having their frontends arranged to be shiftable laterally during the time that they aretaking on the load at the front end have had their rear end portionssup--- ported upon trucks. But I am not aware that anyone has everdesigned the relationship of parts which I have produced in apparatus ofthis class. Heretofore the custom has been to have one truck for thefront end portion of the conveying apparatus or elevating mechanism andanother separate truck for the rear portion. The total wheel basein suchan apparatus is so elongated thatiitis impracticable to follow thisprinciple of construction in making apparatus to run on the tracks instorage yards, in mines or in some other places where curves arenecessarily of short radius. The dificulties are obviated with amechanism such as I have herein shown, as the wheel base is actuallyshortenedwhen the apparatus is being transported from place to placeeither around the sharp curves or along straight track; and in turn,this base is lengthened when the several parts of the mechanism are tobe put in the positions they occupy when at work. The truck element, aswill be seen, is in two sections, one of which.1s constantly-bearing andthe other intermit tingly bearing downward upon or toward the ground.The intermittingly working section is so disposed that it extends thewheel base or supporting base farther under or toward the main pivot ofthe conveyer mechanism, so that the latter can be firmly supported atits discharge end at ground points well outside of the center ofgravity,while the forward end can be shifted laterally for the purpose ofsweeping through a wide are for picking up load material, it movinglaterally across the longitudinal vertical planes of the truck elementfreely and without obstruction therefrom, the gfront end of theapparatus, as above described, at such times receiving its verticalsupport independently'of the truck What I claim is:

1. In a loader, the combination of a support, a bracket arm thereonadapted to overhang a car that is placed adjacent the, support, and aconveyer having its discharge end pivoted on the overhanging part of thebracket and its receiving end adapted to swing laterally. v

2.. In a loader, the combination of a truck, a rearward extension onthe-truck adapted to move downward and receive support from' the floor,a bracket arm mounted on said truck extension adapted to overhanga carpositioned adjacent the truck, and a conveyer having its discharge endpivoted on the overhanging part of the bracket arm and its receiving endadapted to swing latorally.

3.. In a loader, the combination of a movable support, an adjustablebracket extend- ;ing from said support, an elongated conveyer having itsdischarge end pivotally mounted upon the outer end of the bracket andits receiving end arranged to rest in operative position u on theground,said bracket being adapts when in one-position of adjustmentcorresponding to the opera tive position of the conveyer .to receive atits outer end the weight of the conveyer and whenin another position ofadjustment corresponding to the inoperative position of the conveyer toreceive said-weight at a point nearer its supported end, and means onthe said support forming an additional point of support for theconveyer-when the bracket is in its last named position of adjustmentground, said bracket being adapted when in one position of adjustmentcorresponding to the operative position of the conveyer to receive atits outer end the weight of the swinging conveyer and when in anotherposition of adjustment corresponding to the inoperative osition of theconveyer to receive said weig t at its joint, and means on the saidsupport forming an additional point of support for the conveyerwhen thebracket is in its last named position of adjustment and the receivingend of the conveyer. is raised from the ground. 1

5. In a loader, the combination of a 'movable support, a' verticallyswinging'eXtension carried by said support and adapted to be raised fromand lowered to the ground, an adjustable bracket mounted on saidextension, an elongated conveyer havingits discharge end pivotallymounted on the outer end of said bracket and its receiving end arrangedto rest in operative position upon the ground, said bracket beingadapted when in one osition of vadjustment corresponding to t eoperative position of the conveyer to receive at its outer end theweight of the conveyer and when in another position of adjustmentcorresponding to the inoperative position of the conveyer to receivesaid weight at a point nearer its sup ported end, and means on the saidsupport forming an additional point of support. for the conveyer whenthe bracket is m its last named position of adjustment and the receivingend of the conveyer is raised from the ground.

6. In a loader, the combination of a movable'support, a verticallyadjustable extension on said support adapted to be moved downward to andupward from the ground,

an adjustable bracket pivotal-1y mounted on said extension and having ajoint between otall mounted on the outer end of the brac et. and itsreceiving end arranged to restin operative position upon the ground,

said'bracket being adapted when in one position of adjustmentcorresponding to the veyer and in another position'of adjust mentcorresponding to the inoperative position of the conveyer to receivesaid weight at its joint, and means on the said support forming anadditional point of support for the conveyer when the bracket is in itslast mentioned position of adjustment and the receiving end of theconveyer is raised from the ground.

7. In a loader, the combination of a movable support, an adjustablebracket extending from said support, an elongated conveyer having itsdischarge end pivotally supported upon the outer end of the 'bracket andits receiving end arranged to rest in operative position upon theground, said bracket being adapted when in one position of adjustmentcorresponding to the opperative position of the conveyer to receive atits outer end the weightof the conveyer and when in another position ofadjustment corresponding to the inoperative position of the conveyer toreceive said weight at a point nearer its supported end, means on thesaid support forming an additional point of support for the conveyerwhenthe bracket is in its last named position of adjustment and thereceiving end of the conveyer is raised from the ground, and powerdevices for effecting the adjustment of the bracket.

8. In a loader, the combination of a support, a bracket arm mounted onthe support and projecting therefrom so as to overhang a car positionedadjacent the support, an

elongated conveyer having its discharge end a projecting bracket armthereon adapted.

to overhang a car positioned adjacent the truck, an elongated conveyerhaving its dis charge end pivoted on the overhanging part of the bracketarm and its receiving end movable laterally, and a vertically adjustablesupport on the truck for the receiving end of the conveyer, the saidsupport being elongated transversely of the conveyer whereby theconveyer is sustained when it is swung laterally. 10. The combination ofa support, an elongated conveyer, a vertical pivot connecting the saidconveyer to the support at a vertical line outside of the base of thesupport around which the conveyer swings laterally at its front lowerend, means connecting the lower end with a stationary abutment formoving it laterally and power devices mount-. ed on the conveyer, powertransmitting means between the power devices and the conveyer, and powertransmitting means between the power devices and the means for swingingthe forward end of the conveyer laterally. 11. A conveying apparatushaving in combination a truck formed in two sections permanently securedtogether, one section being intennittingly operative as a groundsupport, an endless conveyer, a conveyer frame resting at one of itsends upon one of the truck sectionsand at its other end supportedindependently of the truck, when in working position, and supported uponthe other truck section when it is in non-working position and isarranged for transportation, bodily.

12. The combination of a two part truck with one part intermittinglyandthe other part constantly bearing upon the round, a conveyermechanism,-a frame t erefor adapted when in one position relative tohorizontal planes to bear downward exclusively upon the truck andthrough the truck to the ground, and to bear downward upon the truck andupon the ground independently of the truck when the conveyer frame is,bodily, inanother position relatively to horizontal planes.

13. In apparatus of the character described, the combination of a truck,an endless conveyer, an elongated frame for said conveyer extending frompoints in front to points in rear of the truck, means on the truck forpivotally supporting the frame with freedom to swing laterally acrossthe top of the truck said pivotal support being movable forwardly andbackwardly in relation to the truck, and the conveyer frame beingvibratable vertically in relation to the pivotal support.

14. The combination of a truck, an endless conveyer, an elongated frainefor the conveyer, a pivotal support for the conveyer frame mounted onthe truck, said support permitting the conveyer frame to swing lat- 106erally' with its receiving end on the ground and to vibrate vertically,and means for additionally supporting the conveyer on the truck when thereceiving end of the conveyer is raised 0E the ground.

15. The combination of a truck, a bracket arm projectingrearwardly fromthe truck, an endless conveyer, an elongated frame for the conveyerpivotally supported at the dis charge end 0 the conveyer on the bracketarm with its receiving end free to move laterall upon the ground and tovibrate vertical y, and means on the truck for additionally supportingthe conveyer frame when itsreceiving end is raised from the ground.

16. The combination of a-truck having two frame parts pivotallyconnected on a transverse axis, wheels supporting the frame parts atsaid axis, additional wheels supporting each frame art at a distancefrom the said axis,.an en less conveyer, an elongated frame thereforpivotally mounted on one of the frame parts of the truck with itsreceiving end free to move laterally on the ground and vibratevertically, and means for suping part of the bracket and its receivingend adapted to swing laterally. 10

In testimony whereof I afiix my signature,

in presence of two witnesses.

NILS D. LEVIN.

Witnesses: 4

DUDLEY T. FISHER, F. C. Cosn.

